Sharpstar 0.75x Reducer for 61EDPH III

Codice articolo: SHRED61

With the reducer, the focal ratio of 61EDPH Ⅲ is reduced to f/4.4 and the focal length is reduced to 270 mm, making the telescope the first choice for deep sky astrophotography.

♦ Specially calculated for 61EDPH III

♦ Quadruplet design for high image quality

♦ Focal reduction by 0.75x

♦ Focal length with 61EDPH III: 270 mm, f/4.4

♦ 44 mm corrected field of view (full-frame format)

♦ Camera connection via M48 thread (55 mm working distance) or M54 thread (75 mm working distance)

Sharpstar 0.75x Full-Frame Reducer for 61EDPH III

The reducer adopts an air-spaced quadruplet structure, supporting full-frame imaging. With the reducer, the focal ratio of 61EDPH Ⅲ is reduced to f/4.4 and the focal length is reduced to 270 mm, making the telescope the first choice for deep sky astrophotography.

One end of the reducer features an M68×1 female thread to connect to the focuser draewtube, the other end of the reducer has an M48×0.75 male thread with built-in 2" filter thread. The back focus is 55 mm. If it needs to be extended, the reducer can be split to reveal an M54×0.75 female thread, and the back focus becomes 75 mm.